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ManualsBrandsLittelfuse ManualsDPDT RelaysDPDT 8 Pin Cross-Wired Alternating Relay (120V)
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© 2018 Littelfuse Protection Relays & Controls
www.littelfuse.com/
Rev: 1-A-060216
Protection Relays
Alternating Relays
www.littelfuse.com/
Rev: 1-A-101118
www.littelfuse.com/arp
Description
The ARP Series is used in systems where equal run time for
two motors is desirable. The selector switch allows selection
of alternation or for continuous operation of either load. LED’s
indicate the status of the output relay. This versatile series may
be front panel mounted (BZ1 accessory required) or 35 mm
DIN-rail mounted with an accessory socket.
Operation
Alternating: When the rotary switch is in the “alternate”
position, alternating operation of Load A and Load B occurs upon
the opening of the control switch S1. To terminate alternating
operation and cause only the selected load to operate, rotate
the switch to position “A” to lock Load A or position “B” to lock
Load B. The LEDs indicate the status of the internal relay and
which load is selected to operate.
Note: Input voltage must be applied at all times for proper
alternation. The use of a solid-state control switch for S1 may
not initiate alternation correctly. S1 voltage must be from
the same supply as the unit’s input voltage (see connection
diagrams). Loss of input voltage resets the unit; Load A
becomes the lead load for the next operation.
Duplexing (Cross-Wired): Duplexing models operate the same
as alternating relays and when both the Control (S1) and Lag
Load (S2) Switches are closed, Load A and Load B energize
simultaneously.
The DPDT 8-pin, cross-wired option, allows extra system load
capacity through simultaneous operation of both motors when
needed. Relay contacts are not isolated.
Features & Benefits
FEATURES BENEFITS
Alternating or
electrically locked
operation
Flexibility to run unit alternating between the
two loads as normal or lock the relay to one
specific load.
Low profile
selector switch
Prevents accidental actuation
LED status indication Visual indication of which load is engaged
Industry standard
base connection
Flexibility to use in many applications
ARP SERIES
Alternating Relay
Wiring Diagram
L1
N/L2
L1 N/L2
L1 N/L2
V = VOLTAGE
LA = LOAD A
LB = LOAD B
S1 = PRIMARY CONTROL SWITCH
S2 = LAG LOAD SWITCH
Relay contacts in above are isolated.
SPDT 8-PIN DPDT 11-PIN
DPDT 8-PIN CROSS-WIRED
Ordering Information
MODEL
LINE
VOLTAGE
OUTPUT
FORM
DESCRIPTION
AR120A-3095 120VAC SPDT 8-pin for alternating applications. Rotary switch allows user to lock internal relay to one specific load.
ARP23S 24VAC DPDT 8-pin cross-wired for duplexing applications. Rotary switch allows user to lock internal relay to one specific load.
ARP41 120VAC SPDT 8-pin for alternating applications.
ARP41S 120VAC SPDT 8-pin for alternating applications. Rotary switch allows user to lock internal relay to one specific load.
ARP42S 120VAC DPDT 11-pin for alternating applications. Rotary switch allows user to lock internal relay to one specific load.
ARP43 120VAC DPDT 8-pin cross-wired for duplexing applications.
ARP43S 120VAC DPDT 8-pin cross-wired for duplexing applications. Rotary switch allows user to lock internal relay to one specific load.
ARP61S 230VAC SPDT 8-pin for alternating applications. Rotary switch allows user to lock internal relay to one specific load.
ARP62S 230VAC DPDT 11-pin for alternating applications. Rotary switch allows user to lock internal relay to one specific load.
ARP63S 230VAC DPDT 8-pin cross-wired for duplexing applications. Rotary switch allows user to lock internal relay to one specific load.
If you don’t find the part you need, call us for a custom product 800-843-8848
8-PIN
11-PIN

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